Binar Kurnia Prahani, Sayidah Mahtari, Suyidno, Joko Siswanto and Wahyu Hari Kristiyanto 2020. Metaphysics in a Review of "Karl Popper’s Philosophy of Science" (Rationality Without Foundations) by Stefano Gattei. IJORER : International Journal of Recent Educational Research. 1, 3 (Oct. 2020), 314-318. DOI:https://doi.org/10.46245/ijorer.v1i3.58.